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Brain cell migration during normal development may offer insight on how cancer cells spread
Date:4/24/2011

SEATTLE By shedding new light on how cells migrate in the developing brain, researchers at Fred Hutchinson Cancer Research Center also may have found a new mechanism by which other types of cells, including cancer cells, travel within the body. The findings by Jonathan Cooper, Ph.D., member and director of the Hutchinson Center's Basic Sciences Division, and Yves Jossin, Ph.D., a research fellow in Cooper's laboratory, published online April 24 in Nature Neuroscience, could lead to a better understanding of neurological development and, possibly, cancer metastasis.

During normal development cells divide, arrange themselves in appropriate patterns, and specialize to form discrete tissues and organs. For the body to develop properly, cells must coordinate their migratory patterns and the process by which they differentiate, or evolve from less-specialized cells into more-specialized cell types. A lack of such coordination leads to disordered development and, in some cases, cancer.

Jossin and Cooper set out to analyze how cells migrate in the cerebral cortex of the developing brain. The cerebral cortex, gray matter of the cerebrum, is the brain's command and control center where cognition and planning occur, and it is particularly well developed in humans.

The cerebral cortex is composed of horizontal layers of nerve cells, or neurons, which are specialized for different functions and connected vertically into circuits. If some neurons are in the wrong layers, the wiring can be defective and neurological disorders including epilepsy, autism and schizophrenia may result.

In the fetus, the cortex grows "from the inside out" via the sequential addition of new neurons, which move from the inside, pass between neurons in previously established intermediate layers, and form new layers on the outside. How the migrations are regulated remains unclear despite years of study.

Jossin and Cooper now report the discovery of signals that control a particu
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Contact: Kristen Woodward
kwoodwar@fhcrc.org
206-667-5095
Fred Hutchinson Cancer Research Center
Source:Eurekalert

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